. "UGC 2140 is an irregular galaxy in the constellation Aries. It was thought to be a compact group of galaxies, catalogued as HCG 18, but in 1999 the object was found to be a single galaxy with multiple star-forming regions."@en . "VV143,HCG18,UGC2140,Z462-37,APG258,MCG+03-07-037,Z0236.3+1810,Arp258"@en . "UGC 2140"@en .